最佳实用控制技术——一个考虑到由污染控制技术成本使用中收回效益的排放标准。
Best practicable control technology — an effluent standard considering the cost of the pollution control technology in relation to the benefits received from its use.
第301条和304条对“最佳实用技术”、常规污染物“最佳控制技术”和“最佳现有技术”所下的定义，使环境保护局在建立污水限制时，要认真区分排污的种类和级别。
Section 301's and 304's definitions of BPT, BCT and BAT leave EPA with considerable discretion in establishing effluent limitations for different categories and classes of dischargers.
应用推荐